125126139 has 8 divisors (see below), whose sum is σ = 167379520. Its totient is φ = 83145096.

The previous prime is 125126093. The next prime is 125126159. The reversal of 125126139 is 931621521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125126139 - 2⁷ = 125126011 is a prime.

It is a super-2 number, since 2×125126139² = 31313101322094642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125126159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67009 + ... + 68850.

It is an arithmetic number, because the mean of its divisors is an integer number (20922440).

Almost surely, 2^125126139 is an apocalyptic number.

125126139 is a deficient number, since it is larger than the sum of its proper divisors (42253381).

125126139 is a wasteful number, since it uses less digits than its factorization.

125126139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136169.

The product of its digits is 3240, while the sum is 30.

The square root of 125126139 is about 11185.9795726615. The cubic root of 125126139 is about 500.1681287924.

The spelling of 125126139 in words is "one hundred twenty-five million, one hundred twenty-six thousand, one hundred thirty-nine".